Rattley 1HZ

[twocs]

Hey all. Just had my 1HZ (130 k) in for a fuel pump reco and while it was in, I got a full service, oil change etc. But now I have it back, its got that normal diesel rattle, but 10 x worse.... When first started, its sounds terrible and doesn't get much better when warmed up. The mechanic's not too bothered but says he'll change the oil up from SAE 15w- 40 to something a bit thicker if it doesn't serrle down soon. Any thoughts ?

[berad]

Thinner oil than you had in it, possibly inj pump could be a bit out of time.

[Z()LTAN]

sounds like diesel knock.

The new pump install may be at fault

[samdumbert]

Did they adjust the reco pump correctly or just line it up to the mark?

[oldmate]

Quick check the timing marks on the side of the block and pump. look at it through the wheel arch for a better angle. The marks are pretty fool proof and doing the timing via a guage isn't normally necessary. If the timing is off that much you'd probably have a big smoke problem too.

Did you take it to a diesel injection specialist or a normal mechanic? If it was a reputable diesel shop then you probably don't have anything to worry about. Some 1hz are a bit rattlier than others. If it's not blowing massive smoke or using excessive fuel it's probably alright.

I don't think changing the oil will make any difference. 15/40 is normal for a 1hz in most conditions and 130k isn't really alot of km's for there to be excessive mechanical wear.

[twocs]

Thanks guys. Problem seems to be settling a little. It did go to a specialist and very little if any smoke is visible.... Hopefully nothing to worry about. Heading to the Cape in 3 weeks. Might just be paranoid.....